Can you answer two 10th grade geometry questions?

If m∠S = 70°, what is m∠U?
http://i.imgur.com/abcsjPj.png
A. 30°
B. 40°
C. 50°
D. 60°

m∠BAC = m∠BCA. If AB = 5 and AC = 6, then what is BC?
http://i.imgur.com/FafrxZp.png
A. 5
B. 6
C. 10
D. 5.5

1. The figure given is an isosceles triangle. In the properties of an isosceles triangle, there are two equal angles. m∠S = 70°, then m∠T = 70°. then m∠U = 180 - (70+70) = 40.

2.The same case in 1. The angle are equal at two base. which means it is an isosceles triangle. then side BC = 5

70 + 70 +
AB = BC = 5